body{
    margin: 0;
    padding: 0;
}
.info-state{
    width: 650px;
    margin: 70px auto;
}
.login-state{
    width: 550px;
    margin: 150px auto;
}
.login-btn{
    text-align: center;
    width: 90%;
    margin: 40px auto;
}
.login-btn-state{
    width: 90%;
}
.logo {
    position: absolute;
    z-index: 999;
    left: 20px;
    top: 10px;
  }
  .logo img{
    width: 2.2em;
    vertical-align: bottom; 
  }
  .logo  h1{
    display: inline;
    vertical-align: center;
    color: #fff;
    font-size: 1.7em;
    font-weight: 300;
    font-family: "Courier New", Courier, monospace; 
  }
.el-menu-nav li {
      float: right !important;
    }
    .table-wrapper {
        width: 100%;
        height: 100%;
        overflow: auto;
        color: #fff;
    }
    .tabel-container {
        margin: 7px;
    }
    .subTable,table {
        table-layout: fixed;
        width: 100%;
    }
    .subTable .subThead{
        background-color: #67a1ff;
    }
    .subTable .subThead .subTh{
        color: #fff;
        line-height: 17px;
        font-weight: normal;
    }
    .subTable .subTbody {
        background-color: #eaf2ff;
        
    }
    .subTable .subTbody .subTd {
        color: #677998;
        line-height: 12px;
    }
    .subTable .subTh,
    .subTd {
        width: 60px;
        padding: 12px 2px;
        font-size: 12px;
        text-align: center;
    }
    .subTable .subTr .subTd:first-child {
        color: #333;
        
    }
    .period {
        font-size: 8px;
    }

.main{
    display: flex;
}
.leftMenu {
    display: block;
    position: fixed;
    bottom: 0;
    top: 60px;
    width: 190px;
    left: 0;
    z-index: 999;
  
  }
  .leftMenu ul {
    height: 100%;
    border-radius: 0;
    position: fixed;
    border-right: 1px solid rgb(84,92,100);
    width: 145px;
  }
  .rightMenu{
      margin-left: 145px;
  }
  .el-table .cell {
    color: #333;
}
.addStudentBtn{
    width: 100px;
    margin: 10px;
}